The construction party made a mistake in the elevation and caused the increase in the amount of foun

1. The nature is different.

On-site visa, when there is a problem during the construction process, because it takes time to submit for approval, it is a process of approval by the person in charge of the site on the spot at the construction site. The on-site representative of the employer (or its authorized supervisor or project cost consultant) and the on-site representative of the contractor shall sign and certify the liability events involved in the construction process.

On-site change, in the process of implementation of the project, in accordance with the procedures agreed in the contract, the supervisor according to the needs of the project, issued instructions to the original design in the bidding documents or the construction plan approved by the supervisor in any aspect of the material, process, function, efficacy, size, technical indicators, project quantity and construction methods, collectively referred to as engineering changes.

2. The scope of content is different.

The scope of the on-site visa generally includes: it is applicable to the confirmation of sporadic works other than the construction contract; The quantity of work that needs to be confirmed on site after changes occur during the construction process; Labor, equipment and related losses caused by non-construction units; The increase or decrease in the amount or cost of the project caused by the non-construction unit in accordance with the provisions of the construction contract; Confirm the increase or decrease in the amount or cost caused by the modification of the construction plan; Increases or decreases in the cost of construction measures due to engineering changes, etc.

On-site changes include the increase or decrease of the contract work content, the change of the contract engineering quantity, the design change caused by geological reasons, the change of the structure size and elevation according to the actual situation, and any work outside the contract.

3. The causes are different.

Due to various reasons, such as the foundation project due to the phenomenon of quicksand, or tombs, etc., the foundation can not meet the requirements of the design bearing capacity, so we need to change the construction plan, and accordingly need to make an on-site visa, and after the supervision and construction unit signed and sealed, which becomes part of the contract.

There are other irresistible factors that require a visa, such as the planned construction period is one month, but due to the 10 days of rainy weather from the start of construction, the normal construction cannot be carried out, which requires the visa application to be extended.

Reasons for on-site changes: Reasons for the owner: changes in project scale, use function, process flow, quality standards, and changes in the construction period.

Design reasons: design errors, design adjustments, or design changes due to natural factors and other factors, etc. Reason for construction:

The construction method, operation sequence and construction technology need to be changed due to construction quality or safety.

Supervision reason: the supervision engineer for the project coordination and the control of the project objectives, and the proposed change of the construction process, construction sequence. Contract Reason:

Some clauses of the original contract need to be amended and supplemented in light of actual conditions due to changes in objective conditions. Environmental causes: unforeseen natural factors and changes in the external environment of the project lead to engineering changes.

1. The file types are different.

An on-site visa is an economic document that is adjusted in response to the contractually defined additions or deletions of permits or changes in technology. The designer's signature is not required for the on-site visa.

A site change is a technical document that requires the designer's signature for design changes, technical validation, and negotiation (technical content). Site changes cannot be used directly as proof of settlement. It should be attached to the on-site visa so that the visa can be reviewed.

2. The legal effect is different.

Change in project management refers to the fact that project stakeholders often request modifications or even re-planning of the project plan for various reasons, and this type of modification or change is called change.

The construction visa is a visa confirmed in writing by both the contractor and the contractor, which becomes the evidence for the settlement or final settlement of the project and the increase or decrease of the project cost.

Third, the main body is different.

Change refers to the adjustment and modification made by the contractor to the project in accordance with the contract. The project visa is the result of the agreement between the contractor and the employer, and is a legal act of both parties;

Fourth, the content is different.

A change is a modification to the work content in the contract, adding or canceling a certain job.

A visa is something other than the drawings that actually occurred during the construction process, or something that was not considered in the original budget, and may incur construction costs and be necessary as a written record for on-site records.

1. The file types are different.

An on-site visa is an economic document that is an adjustment due to the addition or decrease of a license as agreed in a contract, or an adjustment due to a change in technology. The designer's signature is not required for the on-site visa.

Field changes are technical documentation, design changes, technical validation and negotiation (technical content). On-site changes cannot be used directly as proof of settlement and should be attached to the on-site visa** as evidence of the visa** for review.

2. The content is different.

Change, i.e., contract change, refers to the change of the work content of the contract, adding or canceling a certain job.

A visa is something that does not actually happen during the construction process, or something that was not considered in the original budget, which may result in the cost of the project and textuality, which must be recorded as an on-site record.

3. The legal certificate is different.

Changes in project management mean that project stakeholders often need to make revisions or even reschedule project plans for a variety of reasons. This type of modification or change is called a change.

The visa is the result of an agreement between the two parties and is a legal act of both parties. The interests involved in the engineering visa have been established and can be directly used as evidence for project settlement. Engineering visas are routine tasks in the construction process and usually do not rely on evidence.

The on-site visa is an economic document, which is adjusted by the increase or decrease of the license agreed in the contract, or the increase or decrease due to the change of technology. The on-site visa does not need to be signed by the designer; On-site changes are technical documents, which require the designer's signature for design changes, technical approval, and negotiation (technical content). On-site changes cannot be used directly as settlement vouchers, but should be attached to the on-site visa form as proof of the visa form for audit.

Generally, the design is changed, and it is okay to let the construction party issue a document, but it must be stamped and signed by the design unit to form a formal change document.

...After Party A receives the original elevation, the construction party excavates the foundation, of course, the lower the better, because the lower the drop, the greater the difference, so that the amount of earthwork will go up, it is money. . . Do you think it's useful!!

Engineering change is a general term that includes design changes and construction changes. Design changes are initiated by the design unit, and construction changes are initiated by the construction unit, understand? Once understood, the process will be clear, and the responsibilities will be clear.

I think the question you are asking refers to the difference between construction change and design change.

Design change is to ensure the design and construction quality and improve the engineering design during the construction of the project. Correction of design errors and design modifications to meet changes in site conditions. Including design changes proposed by the construction unit, design unit, supervision unit, construction unit and other units.

Generally, there are two main forms: the design change notice issued by the original design unit and the design change contact form agreed by the original design unit obtained by the construction unit.

1. The scope of the project change.

1) According to the conditions of the FIDIC construction contract, the content of the project change may include the following aspects:

1) change the amount of any work included in the contract;

2) change the quality and nature of any work;

3) Change the elevation, baseline, location and size of any part of the project;

4) Deletion of any work, except for work to be performed by others;

5) any additional work, engineering equipment, materials or services required for any permanent works;

6) Change the construction sequence or timing of the project.

2) According to the model text of China's construction contract, engineering changes include design changes and changes in other substantive contents such as engineering quality standards, among which design changes include:

1) Change the elevation, baseline, location and size of the relevant part of the project;

2) increase or decrease the amount of work agreed in the contract;

3) change the construction time and sequence of the relevant works;

4) Other additional work related to engineering changes.

2. Procedures for engineering changes.

1) Propose engineering changes. According to the actual situation of the implementation of the project, the owner, the supervisor, the designer or the contractor and other units can propose project changes as needed.

2) Approval of engineering changes. Proposed engineering changes by the contractor should be submitted to the engineer for review and approval.

3) Issuance and execution of engineering change orders.

3. Responsibility analysis and compensation requirements for engineering changes.

1) Changes to the construction plan must be approved by the engineer, regardless of whether the change will bring benefits to the owner (e.g., shortened construction period, cost savings).

2) The contractor shall be liable for the increase in costs and the extension of the construction period caused by the defects of the contractor's construction process and the construction plan itself.

3) Before awarding the contract to the contractor (or signing the contract), the owner may require the contractor to supplement, modify or explain the construction plan in order to meet the requirements of the owner. After the award of the contract (or after the signing of the contract), the owner can claim compensation from the owner for the increase in costs caused by the change of construction plan in order to speed up the construction period and improve the quality.

1.The reason for the change shall be typed by the construction unit and the original drawings that need to be changed shall be attached.

2. Take the design change order and find the design institute to seal and sign.

1. Construction in accordance with the requirements of the drawings and replace it with rubble concrete. All the over-excavated parts on our side are all concrete replacement, and there is nothing to add a pillar or anything, so there is no guarantee that the bearing capacity will happen sooner or later.

2. Under normal circumstances, excavation is required for soil layer and bearing capacity on the drawings, and the general industrial building is 3 types of sandstone and, and the over-excavated parts of our side must be compacted and sampled to detect the degree of compaction, and the design institute must inspect the type of excavated base soil layer on site. The over-excavation site has a special foundation inspection data, indicating that the excavation has been completed at the bottom elevation, and the supervision and design are signed and sealed.

3. The over-excavation visa needs to be supervised on-site measurement, which involves the professional surveying, and the volume of the over-excavation part is measured with a level and a ruler. Then fill in the quantity visa ** clearly, please sign and confirm with the supervisor, and submit it to the owner's business department together with the foundation groove inspection information.

After overexcavation, whether to use deepened columns or rubble concrete according to the drawings is to be determined by design.

The over-excavation part of the visa has a special **, indicating the location, the amount of work, and the time, and it is best to attach the on-site sketch and **, and there are signatures and seals of Party A, supervision and construction units below.

The calculation of engineering quantity refers to the part of over-excavation, and if you want to calculate the large excavation, it should be written in the construction plan (this is to be signed by the supervisor and Party A).

1. There is a lot to say, but can you get a drawing?

2. If it is indeed stipulated in the drawings, it should be made of rubble concrete.

3. The visa can be filled in according to the requirements of the drawings.

4. Calculate the amount of over-excavation, according to the elevation of the original soil surface, to the elevation of your actual excavation.

This is an accident, if it is a bidding project, there is no money to take, and you will do the ...... of soil replacement and backfilling

Matters related to the treatment of foundation earthwork, visas, and quantity calculations. According to the site foundation soil conditions after the over-excavation and according to the relevant description requirements of the design drawings and the process of foundation groove inspection and the relevant written branch documents, such as the over-excavation part to meet the original design requirements according to the design drawings of the clear material backfill, not to meet the requirements of the design institute to determine the treatment opinions and materials. Do a good job of the site plane location, section and text description, as the engineering quantity calculation formula, and go through the on-site visa procedures of the relevant parties, and finally submit the project settlement.

Generally, there are construction parties, developers, supervision parties, and follow-up audit parties to handle visa procedures. ）

(1) General rules for the calculation of earthwork quantities:

1 The volume of earthwork is calculated based on the volume of natural dense solids. Non-natural compacted earthwork (such as imaginary volume, tamping volume and loose fill volume) should be converted according to Table G1-3.

200 Overexcavation treatment of building foundation earthwork, visa, quantity calculation problems.

"Changes to the content and meaning of the visa.

Change is a change, visa is a visa, change is a change in the contract or contract related to the work practice or process, the settlement can be settled according to the actual settlement according to the change drawings in accordance with the quantity calculation rules, no visa is required, because the rules are unified, the drawings are determined, if the visa must be applied for to settle the increase in the amount of work, then the change leads to a reduction in the amount of work whether the construction unit also has to do a reduction in the information, otherwise the settlement does not need to be deducted is obviously wrong, Therefore, it is enough to grasp the settlement based on the principle of the actual quantity of the design and completion; If the visa is for work that is not designed outside the contract, if it occurs within the specified time limit, the cost of increasing the amount of work shall be handled.

The change is basically the reason of Party A, and the documents issued to the construction unit, and the change in the quantity, materials, labor, and construction period caused by the change or other reasons required by Party A, and the increase in other economic, construction period, and technical aspects proposed by the construction unit to Party A

There is an essential difference between a change and a visa, which is a change from one thing to another. A visa is a transit procedure that must be carried out from one country to another, so it is a visa.